Sources: FTC opens an in-depth investigation into Amazon's purchase of MGM (Josh Sisco/The Information)

Josh Sisco / The Information:

Sources: FTC opens an in-depth investigation into Amazon’s purchase of MGM  —  Any hopes that Amazon had of completing its $8.5 billion purchase of movie and TV studio MGM anytime soon may have just gone out the window.  —  The Federal Trade Commission on Friday opened an in-depth investigation …